NEW YORK — Mayor Bill de Blasio announced Wednesday an agreement to move forward on closing Rikers Island and create a "smaller, safer and fairer borough-based jail system."

Officials agreed to a single public review process for four proposed sites in Manhattan, Brooklyn, the Bronx and Queens — the sites providing off-Island space for about 5,000 detainees.

The facilities will include the three existing DOC facilities in Manhattan Brooklyn and Queens as well as a new site in the Mott Haven in the Bronx:

Manhattan Detention Center, 125 White Street, Manhattan, 10013

Brooklyn Detention Center, 275 Atlantic Avenue, Brooklyn, 11201

Queens Detention Center, 126-01 82ndAvenue, Kew Gardens, 11415

NYPD Tow Pound, 320 Concord Avenue, Bronx, 10454

The sites will go through a public review, including hearings and recommendations by local officials. The agreement proposes to renovate, expand or construct jails in the four locations into a single process, which will allow for an expedited review. The Bronx will not be repurposing a current detention center — Instead, the city will build a new facility.

The announcement marks a major step in de Blasio’s process to close Rikers Island, first announced last year, with the city introducing a number of programs that have lessened jail population, including new programs that replace short jail sentences for minor, low-level offenses.